3M 7100178032 Flap Wheel 1 in 120 Grit Aluminum Oxide

Product Description

The 3M 7100178032 is a 244D series flap wheel built for general-purpose grinding, polishing, sanding, and finishing on metal and similar surfaces. At 1 inch in diameter with a 1/4-20 arbor mount and 120 grit aluminum oxide abrasive, this wheel delivers consistent stock removal alongside a finer surface finish than traditional bonded wheels. The flap construction uses individually mounted abrasive flaps that continuously expose fresh mineral as they wear, maintaining cut rate throughout the life of the wheel. An X-weight cotton cloth backing provides the durability needed for edge work while remaining malleable enough to reduce gouging and marring on contoured surfaces.

This flap wheel is suited for metalworking applications in fabrication, maintenance, and finishing environments. The 120 grit rating positions it for blending, light deburring, and pre-finishing work where surface quality matters. Compatible with rotary tools, die grinders, and drill presses equipped with a 1/4-20 threaded arbor, it fits comfortably into standard shop and field workflows for trades professionals handling metal prep tasks.

Key Features

• 120 grit aluminum oxide mineral for sharp cutting and fine finishing in a single wheel
• Individually mounted abrasive flaps continually expose fresh cutting surface as the wheel wears
• X-weight cotton cloth backing resists tearing and handles edge contact without breakdown
• 1/4-20 arbor mount fits common rotary and die grinder spindles
• Suitable for grinding, polishing, sanding, and surface finishing in one tool

Compatibility

Designed for use with rotary tools, die grinders, and drill presses accepting a 1/4-20 threaded arbor. Offered in Type 83 (T83) and Type 84 (T84) mounting systems.

Installation Notes

Installation and operation should be performed by qualified personnel familiar with abrasive wheel safety. Verify the tool spindle speed does not exceed the maximum rated RPM marked on the wheel or packaging before mounting. Ensure the arbor is securely threaded and the work area is clear before engaging the wheel. Wear appropriate PPE including eye protection and gloves during use.

Technical Specifications

• Wheel Diameter: 1 inch
• Arbor Size: 1/4-20
• Grit: 120
• Abrasive Mineral: Aluminum Oxide
• Backing Material: X-weight Cotton Cloth
• Abrasive Type: Coated
• Mounting Type: Type 83 (T83) or Type 84 (T84)
• Package Dimensions: 4.75 x 3.75 x 4.88 inches
• Weight: 0.16 pounds
• Sold As: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100178032